热熔压敏胶SDS共聚物热稳定性的氧化动力学研究(Ⅱ)

Study on oxidation kinetics of thermal stability of SDS copolymer for hot-melt pressure-sensitive(Ⅱ)

上篇文章推导出了含一系列合理参数的耗氧量动力学方程式，为了检验方程的实用性，本研究设计了用于耗氧量实验的热氧化装置，并且测量了热熔压敏胶（HMPSA）抑制和非抑制体系的耗氧量曲线。

As the poor aging property of the SDS （styrene-diene-styrene triblock elastomer） copolymer hot-melt pressure-adhesives （HMPSAs）, it was very important to study the aging and anti-aging property of the SDS triblock copolymer, such as SBS and SIS. The mechanistic scheme based on the standard scheme for radical chain oxidation, but taking into account the decomposition of peroxide resulted in the oxidation, was built. The kinetic equation of oxygen uptake was deduced from the proposed mechanism, which is composed of a set of physically reasonable parameter. The relationships between the parameters and the induction time, maximum oxygen uptake and maximum oxidation rate were discussed. The numerical simulation methods were established in order to get the parameters from the experiment data, by which the most kinetics equations of oxygen uptake of the ingredients of hot-melt pressure-sensitive adhesives were numerically fitted and the relativity from the model to the data were discussed. The results were to be benefit to study the anti-aging performance of the other materials.